Becky, a former Bishop Burton College lecturer, says there are just a few dozen milk vending machines across the country.

She is budgeting for sales of 50 litres of milk a day.

This is a drop in the ocean compared to the thousands of litres produced by her husband’s dairy farm for a supermarket supplier but Becky says: “At the moment it’s going great guns, it started at the weekend and I sold 85 litres on Sunday.